Thread-handling machine



Get. 6, 1925.:

F, N. LA CHAYPELLE THREADHANDLING MACHINE Filed April 11, 1921 2 Sheets-Sheet 1 mowr L Oct. 6., F. -N. LA CHAPELLE THREAD HANDLING MACHINE Filed April 11, 1921 2 Sheets-Sheet 2 Patented Oct. 6, l925.

1,556,226 PATENT; oFFtcE.

rnnnn. L'Af cnAPnIiLE; on BEVERI YfMASSACHUSETTS, Assmnonro unrrnn snon MACHINERY oonronnrron; or 'Arnnson; NEW JERSEY; A CORPORATION" or NEW JERSEY.

reunite!)amimnme Knonmn A ncafioafiman nr 1-1, 1921. Serial No. 460,531..

To-allwhom it maycmwern; 1

Be it known that; I,; ,Fnnni' Ln Crrarnrinn, a citizen of the United States', residing at Beverly, in the county of Essex and State of Massachusetts; have invented: certain new and useful Improvements in Thread-Handling Machines; and. I dohereby declare the following to be a full, clean.

and exact description of the invention, such,

as will. enableothers skilledin the art-to which it appertains to make and use the same. I The present invention .relates to thread handling machines and 'more particularly to machines of thisrtype forinserting a thread fastener through the upper and; In-

sole lip of a lasted. shoe. L p

Asis. well known to those skilled'in the art", the metallic fasteners which serve to ho-ldthe upper in lasted position are sometimes replaced prior tothe inseam. sewing operation by thread fasteners: extending through the upper. and insole lip" of the lasted shoe. These thread fasteners merely serve as temporary holding devices between the lasting and sewing operations and accordingly it is desirable thatthe insertion of the thread fasteners may be accomplished as simply and expeditiously as possible.

7 Oneobject of the present invention is-to providea new and improved form ofthread handling machine by virtue of whichthe operation of forming and inserting these thread fasteners is" materially improved. 35

- With this object in view one 'feature of the invention contemplates the provision of means for passing a loop of thread' through the work and means for compacting orup setting the loopof thread thus formed within the work; Ithas 'been' found that' by thus upsetting the loop of thread, especially where a wax thread is employed, the opene ing within the Work is completely filled} by the thread plug; and the fastener -is held firmly within the work. \Y

An additional feature of the presentin vention contemplates the formation of a tongue in the work which aids in holding the'fastener inplace both durin and after its-formation in the work. In t 'e'fsimplest and most efiicient form of the invention which has yet been devised'an eye needle is provided with a substantially U-shaped eutting edge which formsa tongue in the Mg]:

during its advancing movement and there aften passes a loop of thread throughthe opening left by the tongue. Upon -.writh-;

drawing the needle, a loop of-thread is re-, ii

" Still further features of the invention consist in certain novel features of. construction, combinations andv arrangements. of parts hereinafter described and claimed,the advantages: of which will be obvious: to those skilled in the art from the following description. I

In the. accompanying drawings illustrating. the preferred .form of the invention Figure 'lrepresents a side elevation. of a machine embodying the several features of the invention; Fig. 2' is a front elevation of the machine shown in Fig. 1; Fig; 3 is: a detail illustratingan elevation partly insec tion of the improved formof' needle; Fig. dis an end View of the needle shownin Fig, 3; and Fig. 5 is a diagrammatic view illustrating the malmer in which the loop of thread is. held within the work and compacted by the ramor plunger,

The illustrated embodiment of the invention discloses a machine intended primarily for operation upon af'lasted bootor shoe, as indicated generally at l0, having an insole l'l andan upper 12; lasted thereto. During the operation of inserting the thread fasteners the shoe isheld, f as shown, by a stationary channel guide 14 "adjustably mounted upon the lower endof a post 15 forming a part of the machine frame. C'ooperating-With the channel guide isa back gagelfi which is secured tothe forward end the back gage to accommodate itself'tovary- 5 ing thicknesses of the work. The rearward movement of the back gage to release the work is positively accomplished by engagement of the arm 19 with the extension 22, as is usual in this class of machines.

The formation and insertion of the thread fastener within the work is accomplished by a straight eye needle having a substantially U-shaped cutting edge. This needle during its advancing movement forms a U-shaped incision in the work and passes a loop of thread therethrough, after which it is withdrawn, leaving the loop of thread engaged in the work. Subsequently the loop of thread is severed from the supply and is compacted or upset in the work by a ram or plunger engaging with the thread loop upon the outside of the work. A straight eye needle 30 is secured in the end of a slide 32 supported for movement in inclined ways formed in the machine frame. As will be observed from an inspection of Fig. 1, the needle in its advance moves transversely of the work and in a downward direction from the outside of the upper toward the inside of the insole lip. The needle is provided with a substantially U-shaped cutting edge 34 for the formation of a tongue in the work and an eye 36 through which the thread passes. The needle slide 32 is conveniently provided with an upward extension 88 op eratively connected with a cam path formed in the face 10 of the cam disk 42. The cam path is designed to impart a reciprocating movement to the needle during each rotation of the main shaft 44;. The thread is led from the wax stripper, indicated at 46, over a guide roll 48 about which it makes one complete turn and thence through a guide 50 to the eye of the needle. In order to measure off sufficient thread for the formation of each loop a ratchet toothed wheel 52 is secured to the guide roll and is operated by a drive pawl 54 pivoted to an arm 56 mounted upon the rock shaft 20 and connected through a second arm 58 with a cam path formed in the face 59 of the cam disk 60. This mechanism is designed to rotate the guide roll and draw of a supply of thread .sufiicient for the formation of a single loop. As will be observed from an inspection of Fig. 5, the needle upon its advancing movement forms a tongue in the upper and insole lip and passes a loop of thread through the opening left by these tongues. When the needle is withdrawn, the tongues frictionally engage with the short end of the loop which lies in the lower portion of the needle and prevent the withdrawal of the loop with the needle. After the needle has been withdrawn into the position shown in Fig. 1, a thread cutter 62 pivoted upon the back gage at 64 is operated to sever the thread from the supply. This thread cutter is operated in the usual manner through a slide 65, an arm 66 pivoted upon the shaft 20 and operatively connected through a second arm 68 with a cam path formed in the face 70 of the cam disk 60.

After the loop of thread has been severed from the supply a plunger or ram 72 is advanced through the back gage into engagement with the loop of thread'at the point where it emerges from the upper. This ram, as shown in Fig. 5, is provided with a cupshaped working end 74 to upset the end of the thread loop and compact the wax thread within the opening. The action of this plunger spreads out the fastener within the opening and tends to form a locking head upon the outer end of the fastener in a manner to securely hold the parts of the work together. As will be observed from an inspection of Fig. 1, the plunger 7 2 is secured in the outer end of a slide 7 6 which is operatively connected at its rear end with an arm 78 through a rack 80 formed upon the slide and cooperating with a gear segment 82 formed upon the lower end of the arm. The arm 78 is actuated by a second arm 84 which is operatively connected with a path cam formed in the face 86 of the cam disk 12, as shown in Fig. 2. This cam is designed to advance the plunger into engagement with the loop of thread after the needle has been withdrawn from the work and the thread severed from the supply. Thereafter the plunger and back gage are withdrawn to permit feeding the work into a new position. In the illustrated embodiment of the invention, the work is automatically fed between the completion of one thread fastener and the starting of the next succeeding thread fastener by a feed point 90 engaging the channel of the insole at one side of the channel guide. This feed point depends from a slide 92 supported upon parallel guide rods 93 and '94:. The slide is reciprocated to move the feed point in the direction of feed through a lever 95' fulcrumed at 96 and connected at one end with an extension 97 forming a part of the slide 92. The opposite end is provided with a cam roll 98 which is received in a cam path formed in the periphery 99 of the cam disk 26, as shown in Figs. 1 and 2. The feed point is moved into and out of engagement with the work by oscillating the head 92 through an arm 100 having a forked outer end 101 which straddles a pin 102.secured in the outer end of a rocker arm 103. The rocker arm is connected with a hub 104 having a second arm 105 operatively connected with a cam path formed in the face 106 of the cam disk 26. With this construction the desired four motions are imparted to the feed point to intermittently advance the work between the formation and insertion of the thread fastener. It will be observed that this advancing movement of the work takes place during the time that the back gage is retracted and the work thereby released from the clamping effect of this member.

While it is preferred to employ the spe-.

cific construction and arrangement of parts shown and described it will be understood that this construction and arrangement, is not essential except so far as specified in the claims and may be changed-or modified without departing from the broader features of the invention.

The invention having been described, what is claimed is:

1. A thread fastening machine comprising an eye needle having a cutting edge designed to form a tongue in the work, means for actuating the needle to pass a loop of thread through the work, means for severing the thread, and means for compacting the loopof thread in the work.

2. A thread fastening machine comprising a straight eyeneedle, means for actuating the needle to pass a loop of thread through the work, means for severing the loop of thread from the supply, and means for compacting the loop of thread in the work.

3. A thread fastening machine comprising means for forming a tongue in the work, means for passing a loop of thread through the opening created by the formation of the tongue, means for severing the loop of thread from the supply, and means for upsetting the loop of thread thus formed in the work.

4. A thread fastening machine comprising a straight eye needle having a substantially U-shaped cutting edge, means for actuating the needle toform an incision in the work and to pass a loop of thread therethrough, means for severing the loop of thread from the supply, and means for compacting the loopof thread upon one side of the work.

5. A thread fastening machine comprising work positioning members, a needle,

mechanism for actuating the needle to pass Single loops of thread successively through the-work, means for severing each loop of thread from the supply, and means for feeding the work.

' needle to pass a single loop of thread through the upper and insole lip of a lasted shoe, means for severing the loopof thread thus formed from the supply, and means for feeding the work between the advancing movements of the needle to cause the insertion of the single thread loops at substantially uniform intervals about the shoe.

7. A thread fastening machine comprising work positioning devices, a needle provided with a U-shaped shank terminating in a similarly formed cutting edge and with an eye disposed back of the edge, and means for actuating the needle to form a tongue in the work and to pass a loop of thread through the opening left by the tongue.

8. A thread fastening machine comprising a channel guide and a cooperating back gage, a needle, means for advancing the needle through the work from the outside of the upper to pass a loop of thread through the upper and insole lip, means for severing a loop of thread from the supply, and a plunger adapted to engage with the loop of thread from the outside and compress the loop in the work.

9. A thread fastening machine comprising a needle having a cutting end designed to form an incision in the work, means for actuating the needle to pass a loop of thread through the incision thus formed, means for severing the thread, and means for compacting the loop of thread in the work.

. FRED N. LA CHAPELLE. 

